diff options
Diffstat (limited to 'cfe/cfe/arch/mips/common/include/lib_physio.h')
| -rw-r--r-- | cfe/cfe/arch/mips/common/include/lib_physio.h | 100 |
1 files changed, 100 insertions, 0 deletions
diff --git a/cfe/cfe/arch/mips/common/include/lib_physio.h b/cfe/cfe/arch/mips/common/include/lib_physio.h new file mode 100644 index 0000000..00d0093 --- /dev/null +++ b/cfe/cfe/arch/mips/common/include/lib_physio.h @@ -0,0 +1,100 @@ +/* ********************************************************************* + * Broadcom Common Firmware Environment (CFE) + * + * Physical memory peek/poke routines File: lib_physio.h + * + * Little stub routines to allow access to arbitrary physical + * addresses. In most cases this should not be needed, as + * many physical addresses are within kseg1, but this handles + * the cases that are not automagically, so we don't need + * to mess up the code with icky macros and such. + * + * Author: Mitch Lichtenberg (mpl@broadcom.com) + * + ********************************************************************* + * + * Copyright 2000,2001,2002,2003 + * Broadcom Corporation. All rights reserved. + * + * This software is furnished under license and may be used and + * copied only in accordance with the following terms and + * conditions. Subject to these conditions, you may download, + * copy, install, use, modify and distribute modified or unmodified + * copies of this software in source and/or binary form. No title + * or ownership is transferred hereby. + * + * 1) Any source code used, modified or distributed must reproduce + * and retain this copyright notice and list of conditions + * as they appear in the source file. + * + * 2) No right is granted to use any trade name, trademark, or + * logo of Broadcom Corporation. The "Broadcom Corporation" + * name may not be used to endorse or promote products derived + * from this software without the prior written permission of + * Broadcom Corporation. + * + * 3) THIS SOFTWARE IS PROVIDED "AS-IS" AND ANY EXPRESS OR + * IMPLIED WARRANTIES, INCLUDING BUT NOT LIMITED TO, ANY IMPLIED + * WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR + * PURPOSE, OR NON-INFRINGEMENT ARE DISCLAIMED. IN NO EVENT + * SHALL BROADCOM BE LIABLE FOR ANY DAMAGES WHATSOEVER, AND IN + * PARTICULAR, BROADCOM SHALL NOT BE LIABLE FOR DIRECT, INDIRECT, + * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES + * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE + * GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR + * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY + * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR + * TORT (INCLUDING NEGLIGENCE OR OTHERWISE), EVEN IF ADVISED OF + * THE POSSIBILITY OF SUCH DAMAGE. + ********************************************************************* */ + + +#ifndef _LIB_PHYSIO_H +#define _LIB_PHYSIO_H + +//#ifndef _SB_MIPS_H +//#include "sbmips.h" +//#endif + +/* + * If __long64 we can do this via macros. Otherwise, call + * the magic functions. + */ + +#if __long64 + +typedef long physaddr_t; +#define _PHYSADDR_T_DEFINED_ + +/*#define __UNCADDRX(x) PHYS_TO_XKSEG_UNCACHED(x)*/ +#define __UNCADDRX(x) (((physaddr_t)(x))|0x9000000000000000) + + +#define phys_write8(a,b) *((volatile uint8_t *) __UNCADDRX(a)) = (b) +#define phys_write16(a,b) *((volatile uint16_t *) __UNCADDRX(a)) = (b) +#define phys_write32(a,b) *((volatile uint32_t *) __UNCADDRX(a)) = (b) +#define phys_write64(a,b) *((volatile uint64_t *) __UNCADDRX(a)) = (b) +#define phys_read8(a) *((volatile uint8_t *) __UNCADDRX(a)) +#define phys_read16(a) *((volatile uint16_t *) __UNCADDRX(a)) +#define phys_read32(a) *((volatile uint32_t *) __UNCADDRX(a)) +#define phys_read64(a) *((volatile uint64_t *) __UNCADDRX(a)) + +#else /* not __long64 */ + +#ifdef _MIPSREGS32_ +typedef long physaddr_t; /* 32-bit-only processors can't have >32bit pa's */ +#else +typedef long long physaddr_t; /* Otherwise, they might. */ +#endif + +extern void phys_write8(physaddr_t a,uint8_t b); +extern void phys_write16(physaddr_t a,uint16_t b); +extern void phys_write32(physaddr_t a,uint32_t b); +extern void phys_write64(physaddr_t a,uint64_t b); +extern uint8_t phys_read8(physaddr_t a); +extern uint16_t phys_read16(physaddr_t a); +extern uint32_t phys_read32(physaddr_t a); +extern uint64_t phys_read64(physaddr_t a); +#endif + +#endif |